<template>
    <div class="error-container">
        <div class="error-content">
            <a-row :gutter="20">
                <a-col :lg="12" :md="12" :sm="24" :xl="12" :xs="24">
                    <div class="pic-error">
                        <img
                            class="pic-error-parent"
                            src="@/assets/error_images/404.png"
                        />
                        <img
                            class="pic-error-child left"
                            src="@/assets/error_images/cloud.png"
                        />
                    </div>
                </a-col>

                <a-col :lg="12" :md="12" :sm="24" :xl="12" :xs="24">
                    <div class="bullshit">
                        <div class="bullshit-oops">{{ oops }}</div>
                        <div class="bullshit-headline">{{ headline }}</div>
                        <div class="bullshit-info">{{ info }}</div>
                        <a class="bullshit-return-home" href="#/index">
                            {{ jumpTime }}s&nbsp;{{ btn }}
                        </a>
                    </div>
                </a-col>
            </a-row>
        </div>
    </div>
</template>

<script>
    import { mapActions } from 'vuex'

    export default {
        name: 'Page404',
        data() {
            return {
                jumpTime: 5,
                oops: '抱歉!',
                headline: '当前页面不存在...',
                info: '请检查您输入的网址是否正确，或点击下面的按钮返回首页。',
                btn: '返回首页',
                timer: 0,
            }
        },
        mounted() {
            this.timeChange()
        },
        beforeUnmount() {
            clearInterval(this.timer)
        },
        methods: {
            ...mapActions({
                delOthersVisitedRoutes: 'tagsBar/delOthersVisitedRoutes',
            }),
            timeChange() {
                this.timer = setInterval(() => {
                    if (this.jumpTime) {
                        this.jumpTime--
                    } else {
                        this.$router.push({ path: '/' })
                        this.delOthersVisitedRoutes({ path: '/' })
                        clearInterval(this.timer)
                    }
                }, 1000)
            },
        },
    }
</script>

<style lang="less" scoped>
    .error-container {
        position: relative;
        height: 100vh;

        .error-content {
            position: absolute;
            top: 55%;
            left: 50%;
            width: 40vw;
            height: 400px;
            transform: translate(-50%, -50%);

            .pic-error {
                position: relative;
                float: left;
                width: 100%;
                overflow: hidden;

                &-parent {
                    width: 100%;
                }

                &-child {
                    position: absolute;

                    &.left {
                        top: 17px;
                        left: 220px;
                        width: 80px;
                        opacity: 0;
                        animation-name: cloudLeft;
                        animation-duration: 2s;
                        animation-timing-function: linear;
                        animation-delay: 1s;
                        animation-fill-mode: forwards;
                    }

                    @keyframes cloudLeft {
                        0% {
                            top: 17px;
                            left: 220px;
                            opacity: 0;
                        }

                        20% {
                            top: 33px;
                            left: 188px;
                            opacity: 1;
                        }

                        80% {
                            top: 81px;
                            left: 92px;
                            opacity: 1;
                        }

                        100% {
                            top: 97px;
                            left: 60px;
                            opacity: 0;
                        }
                    }
                }
            }

            .bullshit {
                position: relative;
                float: left;
                width: 300px;
                padding: 30px 0;
                overflow: hidden;

                &-oops {
                    margin-bottom: @vab-margin;
                    font-size: 32px;
                    font-weight: bold;
                    line-height: 40px;
                    opacity: 0;
                    animation-name: slideUp;
                    animation-duration: 0.5s;
                    animation-fill-mode: forwards;
                }

                &-headline {
                    margin-bottom: 10px;
                    font-size: 20px;
                    font-weight: bold;
                    line-height: 24px;
                    color: #222;
                    opacity: 0;
                    animation-name: slideUp;
                    animation-duration: 0.5s;
                    animation-delay: 0.1s;
                    animation-fill-mode: forwards;
                }

                &-info {
                    margin-bottom: 30px;
                    font-size: 13px;
                    line-height: 21px;
                    opacity: 0;
                    animation-name: slideUp;
                    animation-duration: 0.5s;
                    animation-delay: 0.2s;
                    animation-fill-mode: forwards;
                }

                &-return-home {
                    display: block;
                    float: left;
                    width: 110px;
                    height: 36px;
                    font-size: 14px;
                    line-height: 36px;
                    color: #fff;
                    text-align: center;
                    cursor: pointer;
                    background: @vab-color-blue;
                    border-radius: 100px;
                    opacity: 0;
                    animation-name: slideUp;
                    animation-duration: 0.5s;
                    animation-delay: 0.3s;
                    animation-fill-mode: forwards;
                }

                @keyframes slideUp {
                    0% {
                        opacity: 0;
                        transform: translateY(60px);
                    }

                    100% {
                        opacity: 1;
                        transform: translateY(0);
                    }
                }
            }
        }
    }
</style>
